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Commit 5f13fd60 authored by Varadarajan Narayanan's avatar Varadarajan Narayanan Committed by Mark Brown
Browse files

spi: qup: Add completion timeout 



Add i/o completion timeout for DMA and PIO modes.

Signed-off-by: default avatarAndy Gross <andy.gross@linaro.org>
Signed-off-by: default avatarVaradarajan Narayanan <varada@codeaurora.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 32ecab99

drivers/spi/spi-qup.c

+13 −4
Original line number Diff line number Diff line
@@ -331,8 +331,10 @@ static void spi_qup_dma_terminate(struct spi_master *master, 
		dmaengine_terminate_all(master->dma_rx);

}



static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer)

static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer,

			  unsigned long timeout)

{

	struct spi_qup *qup = spi_master_get_devdata(master);

	dma_async_tx_callback rx_done = NULL, tx_done = NULL;

	int ret;
@@ -357,10 +359,14 @@ static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer) 
		dma_async_issue_pending(master->dma_tx);

	}



	if (!wait_for_completion_timeout(&qup->done, timeout))

		return -ETIMEDOUT;



	return 0;

}



static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer)

static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer,

			  unsigned long timeout)

{

	struct spi_qup *qup = spi_master_get_devdata(master);

	int ret;
@@ -379,6 +385,9 @@ static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer) 


	spi_qup_fifo_write(qup, xfer);



	if (!wait_for_completion_timeout(&qup->done, timeout))

		return -ETIMEDOUT;



	return 0;

}
@@ -632,9 +641,9 @@ static int spi_qup_transfer_one(struct spi_master *master, 
	spin_unlock_irqrestore(&controller->lock, flags);



	if (spi_qup_is_dma_xfer(controller->mode))

		ret = spi_qup_do_dma(master, xfer);

		ret = spi_qup_do_dma(master, xfer, timeout);

	else

		ret = spi_qup_do_pio(master, xfer);

		ret = spi_qup_do_pio(master, xfer, timeout);



	if (ret)

		goto exit;